<template>
  <div>
    <div class="shopcart">
      <div class="content">
        <div class="content-left" @click.stop="totalShow">
          <div class="logo-wrapper">
            <div class="logo " :class="{highlight:totalCount}" @click.stop="totalShow">
              <i class="iconfont icon-shoppingcarthover " :class="{highlight:totalCount}"></i>
            </div>
            <div class="num" v-if="totalCount">{{totalCount}}</div>
          </div>
          <div class="price " :class="{highlight:totalCount}">￥{{totalPrice}}</div>
          <div class="desc">另需配送费￥{{info.deliveryPrice}}元</div>
        </div>
        <div class="content-right">
          <div class="pay" :class="this.totalPrice>=this.info.minPrice? 'enough' :'not-enough'">
            {{payText}}
          </div>
        </div>
      </div>
      <transition name="move">
        <div class="shopcart-list" v-if="listShow">
          <div class="list-header">
            <h1 class="title">购物车</h1>
            <span class="empty" @click="empty">清空</span>
          </div>
          <div class="list-content">
            <ul>
              <li class="food" v-for="(food,index) in cartFoods" :key="index">
                <span class="name">{{food.name}}</span>
                <div class="price"><span>￥{{food.price}}</span></div>
                <div class="cartcontrol-wrapper">
                  <CartControl :food="food"></CartControl>
                </div>
              </li>
            </ul>
          </div>
        </div>
      </transition>

    </div>
    <transition name="fade">
      <div class="list-mask" v-if="listShow" @click.stop="totalShow"></div>
    </transition>

  </div>
</template>

<script>
  import {mapGetters, mapState} from "vuex"
  import CartControl from "../CartControl/CartControl"
  import BScroll from "better-scroll"
  import {MessageBox} from "mint-ui"

  export default {
    data() {
      return {
        isShowList: false
      }
    },
    components: {CartControl},
    computed: {
      ...mapState(["cartFoods", "info"]),
      ...mapGetters(["totalCount", "totalPrice"]),
      payText() {
        if (this.totalPrice === 0) {
          return '￥' + this.info.minPrice + '元起送';
        } else if (this.totalPrice < this.info.minPrice && this.totalPrice > 0) {
          return '还差' + (this.info.minPrice - this.totalPrice) + '元起送';
        } else {
          return '结算'
        }

      },
      listShow() {
        if (this.totalCount === 0) {
          this.isShowList =false;
          return false;
        }
        if (this.isShowList){
          this.$nextTick(()=>{
            if (!this.scroll){
              //实现一个BScroll的实例的一个单例
              this.scroll = new BScroll(".list-content",{
                click:true
              })
            } else {
              this.scroll.refresh(); //让滚动条刷新一下，重新统计内容的高度
            }
          });

        }
        return this.isShowList;
      }
    },
    methods: {
      totalShow() {
        this.isShowList = !this.isShowList
      },
      empty() {
        MessageBox.confirm("确定清空购物车吗？").then(action=>{
          this.$store.dispatch("clearCart");
        })
      }
    },
    // watch: {
    //   cartFoods(value) {
    //     this.$nextTick(() => {
    //       new BScroll(".list-content");
    //     })
    //   }
    // }
  }
</script>

<style scoped lang="stylus" rel="stylesheet/stylus">
  .shopcart
    position fixed
    left 0
    bottom 0
    z-index 50
    width 100%
    height 48px

    .content
      display flex
      background #141d27
      font-size 0
      color rgba(255, 255, 255, 0.4)

      .content-left
        flex 1

        .logo-wrapper
          display inline-block
          vertical-align top
          position relative
          top -10px
          margin 0 12px
          padding 6px
          width 56px
          height 56px
          box-sizing border-box
          border-radius 50%
          background #141d27

          .logo
            width 100%
            height 100%
            border-radius 50%
            text-align center
            background #2b343c

            &.highlight
              background $green

            .icon-shoppingcarthover
              line-height 44px
              font-size 24px
              color #80858a

              &.highlight
                color #fff

          .num
            position absolute
            top 0
            right 0
            width 24px
            height 16px
            line-height 16px
            text-align center
            border-radius 16px
            font-size 9px
            font-weight 700
            color #ffffff
            background rgb(240, 20, 20)
            box-shadow 0 4px 8px 0 rgba(0, 0, 0, 0.4)

        .price
          display inline-block
          vertical-align top
          margin-top 5px
          line-height 24px
          padding-right 12px
          box-sizing border-box
          font-size 16px
          font-weight 700
          color #fff

          &.highlight
            color #fff

        .desc
          display inline-block
          vertical-align bottom
          margin-bottom 15px
          margin-left -45px
          font-size 10px

      .content-right
        flex 0 0 105px
        width 105px

        .pay
          height 48px
          line-height 48px
          text-align center
          font-size 12px
          font-weight 700
          color #fff

          &.not-enough
            background #2b333b

          &.enough
            background #00b43c
            color #fff

    .ball-container
      .ball
        position fixed
        left 32px
        bottom 22px
        z-index 200
        transition all 0.4s cubic-bezier(0.49, -0.29, 0.75, 0.41)

        .inner
          width 16px
          height 16px
          border-radius 50%
          background $green
          transition all 0.4s linear

    .shopcart-list
      position absolute
      left 0
      top 0
      z-index -1
      width 100%
      transform translateY(-100%)

      &.move-enter-active, &.move-leave-active
        transition transform .3s

      &.move-enter, &.move-leave-to
        transform translateY(0)

      .list-header
        height 40px
        line-height 40px
        padding 0 18px
        background #f3f5f7
        border-bottom 1px solid rgba(7, 17, 27, 0.1)

        .title
          float left
          font-size 14px
          color rgb(7, 17, 27)

        .empty
          float right
          font-size 12px
          color rgb(0, 160, 220)

      .list-content
        padding 0 18px
        max-height 185px
        overflow hidden
        background #fff
        touch-action: pan-y;

        .food
          position relative
          padding 12px 0
          box-sizing border-box
          /*bottom-border-1px(rgba(7, 17, 27, 0.1))*/

          .name
            line-height 24px
            font-size 14px
            color rgb(7, 17, 27)

          .price
            position absolute
            right 90px
            bottom 12px
            line-height 24px
            font-size 14px
            font-weight 700
            color rgb(240, 20, 20)

          .cartcontrol-wrapper
            position absolute
            right 0
            bottom 6px

  .list-mask
    position fixed
    top 0
    left 0
    width 100%
    height 100%
    z-index 40
    backdrop-filter blur(10px)
    opacity 1
    background rgba(7, 17, 27, 0.6)

    &.fade-enter-active, &.fade-leave-active
      transition all 0.5s

    &.fade-enter, &.fade-leave-to
      opacity 0
      background rgba(7, 17, 27, 0)
</style>
